Is America Jambudvipa or Kraunchadvipa? What dvipa to use during sankalpam?

If we scrutinize it from Purnas’ angle, America may be under Jambudvipa but it cannot be Bharatavarsha.
As per “Jambudvipe Bharatavarshe Bharatakande”, the whole earth that is surrounded by salt sea is called as Jambudvipa, so America may be called as Jambudvipa.